Chair



Oct. 16, 1934. G. GIBB 1,977,550

CHAIR Filed Jan. 29, 1934 lea/ye 4765 Patented Oct. 16, 1934 UNITEDSTATES PATENT OFFICE 2 Claims.

This invention relates to chairs similar in design to the straight chairnow in use for many purposes and has for the primary object theprovision of a device of the above stated character having means wherebythe back and seat may be easily and quickly tilted to variousinclinations from a straight chair forming position so as to suit theuser and be retained in any of its adjusted positions against accidentaldisplacement.

With these and other objects in view this invention consists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed.

For a complete understanding of my invention reference is to be had tothe following description and accompanying drawing, in which Figure l isa rear elevation illustrating a chair constructed in accordance with myinvention.

Figure 2 is a sectional view taken on the line 2-2 of Figure 1. a

Figure 3 is a detail sectional view taken on the line 3-3 of Figure 1.

Figure 4 is a plan view. illustrating a locking plate.

Figure 5 is a side elevation illustrating a locking collar used inconjunction with the locking plate.

Figure 6 is a detail view illustrating a fork of the operating means tothe locking device.

Referring in detail to the drawing, the numeral 1 indicates a chairconsisting of integrally connected seat and back 2Eand 3, respectively.5 Legs 4 are employed for supporting the back and seat and are connectedby upper and lower braces 5 and 6, respectively. The upper braces 5cooperate with the upper ends of the legs 4 in forming a frame structureon which the seat 2 rests when in a straight chair forming position.

Bearings 7 are secured to the rear legs adjacent their upper. ends andhave journaled therein a shaft 8. to which are secured brackets 9 andthe latter are suitably secured to the rear edge of the seat 2 so thatsaid seat is capable of hinging relative to the leg structure. Anoperating shaft 10 is journaled to the front and rear upper braces 5 andthe rear end of said shaft 10 has secured thereto a gear 11 meshing witha gear 12 secured to the shaft 8. The

forward end of the shaft 10 is equipped with a, finger piece or knob 13whereby a person 00- cupying the chair may readily tilt the back andseat into various inclined positions, as suggested in dotted lines inFigure 2. I

A locking plate 14 is secured to the rear upper brace 5 and is aperturedto receive the shaft 10 and is also provided with a series of apertures15 grouped annularly about the aperture which receives the shaft 10. Aspring pressed collar 16 is slidably secured to the operating shaft 10by a pin secured to said shaft and extending into a slot 10' of saidcollar and the latter carries a pin 17 adapted to enter any one of theapertures 15 for locking the back and seat in its adjusted position. Thecollar 16 is of the flange type to receive a fork 18 and'the latter issecured to a slidably mounted shaft or rod 19 which parallels theoperating shaft 10 and is provided with a finger piece 19' at itsforward end. A person occupying the chair and desiring to release thesame for adjustment pulls upon the shaft 19 so as to free the shaft 10for rotation and by rotating the latter the back and seat will be causedto assume various adjusted positions.

A brace 20 of substantially U-shape is journaled to the back 3 adjacentthe seat 2 by bearings 20' and is provided with a finger piece 21.

When the back and seat are adjusted into an inclined position, as shownin Figure 2, the brace 20 may be swung into engagement with the floorfor balancing the chair. When not desiring to employ the brace 20 thelatter may be positioned against the back 3, as shown in Figure 2. Thereis suflicient friction between the bearings 20 and the brace to maintainsaid brace against the back of the chair when so positioned. I

A chair constructed in accordance with the foregoing may be manufacturedat a comparatively low cost which will not greatly exceed the cost ofmanufacture of the ordinary straight chair and will have comfort andadvantages not attainable in the straight type chair.

What I claim is:

1. A chair comprising a leg structure, an integrally connected sea andback supported by thev leg structure, means whereby the seat and backmay be' adjusted to various inclinations oo with respect to theleg-structure, and a brace carried by the seat for engagement with thefloor to balance the back and seat when ad- J'usted into an inclinedposition and swingable against the back when not in use.

2. A chair comprising a leg structure, an integrally connected back andseat supported by the leg structure, "a shaft journaled to the legstructure, means connecting the shaft to the seat, a second shaft gearedto the first shaft 110 gagement with the locking plate, a. pin carried!by said collar to enter any one of said openings, and an operating meansconnected to the collar for disengaging the pin from its respectiveopening.

GEORGE GEE.

